Senior/Staff Java Engineer at Quidax

About the Role

• We’re hiring Senior / Staff-level Java Engineers who love building performant backend systems that run 24/7 and power millions in crypto and fiat transactions. You'll be joining the core backend team that underpins every Quidax product — from deposits and swaps to merchant payments and our API rails. It’s a high-trust, high-impact role for engineers who want to do the best work of their careers.

What You’ll Be Owning

Build & Scale Core Services

• First 30 days: Understand our architecture and take ownership of one core service (deposits, swaps, or settlements)
• By month 3: Lead improvements that reduce latency or improve reliability across one critical flow
• By month 6: Design and implement a new microservice (or refactor an existing one) that handles high-volume traffic across fiat and crypto rails
• Articulate a long term vision for maintaining and scaling our backend systems and the teams running them.

Solve for Performance, Reliability & Observability

• By month 2: Contribute to platform observability initiatives
• By Q1 2026: Drive cross-team initiative to scale platform performance across all critical user flows

Collaborate with Product & Engineering Teams

• Actively lead and participate in architecture reviews, sprint planning, and retros
• Pair with frontend, mobile, and devops engineers to solve cross-functional challenges
• Support junior engineers via reviews, mentoring, and documentation

Biggest Challenges You’ll Tackle

• Here’s what will keep you up at night, but you will want to get it solved like yesterday
• Architect and develop distributed systems
• Provide technical structure to teams and work closely with management and stakeholders to define strategic roadmaps
• Manage individual projects priorities, deadlines and deliverables with your technical expertise
• Write high quality, well tested code to meet the needs of your customers
• Shipping often while keeping a high bar for quality and security

What We’re Looking For

• You write clean code. You sweat the small stuff when it matters. You obsess over system design. And you care about impact.
• 8+ years in software engineering, primarily working with Java 8+ & SpringBoot in production
• Experience architecting and developing solutions to ambiguous problems with significant impact
• Experience writing and maintaining highly scalable and performant code
• Strong grasp of system design, microservices architecture, and distributed systems
• Proficiency in relational databases (MySQL)
• Bonus if you’ve worked in fintech, crypto exchanges, or high-availability systems

Nice-to-haves:

• Familiarity with blockchain integrations or custody wallets
• Experience working in a remote startup environment
• Contributions to open-source projects or technical writing